John takes 25 years of GREATFUL DEAD concerts (100+ live performances) and from them creates (seamlessly) a platonic ideal version of 'Dark Star' one second short of an hour. No Plunderphonic pyrotechnics here but a dead-paced unfolding that imbricates times and places, staying pretty much freeform (with psychedelic climax) until 40 minutes in when there's a rock burst burst followed by a Phil Lesh feature and then echoes of old Mexico. For Grateful dead fans, close listeners and the curious.L